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Enhanced (OH)-O-center dot generation and pollutants removal by framework Cu doped LaAlO3/Al2O3
Zhang, Xiao; Zhang, Lili; Hu, Chun; Yang, Min
2022-06-05
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume431Issue:0Pages:128578
AbstractHighly dispersed framework Cu+/Cu2+ containing LaAlO3/Al2O3 (La-Cu-Al) was synthesized by a solid-liquid mixed sol-gel method. Excessive Al2O3 was confirmed to be necessary for the formation of LaAlO3. The NMR, EXAFS, FTIR and element mapping results revealed that Cu+/Cu2+ preferred to substitute octahedral Al sites and bonded by Cu-O-Al in the lattice of LaAlO3. Compared to La2CuO4, CuAl2O4 and other reported Fenton-like catalysts, La-Cu-Al was more efficient to mineralize refractory pollutants at a wide pH range of 4.0-10.0. More single electrons around Cu center and octahedral Cu+ were confirmed to be responsible for the effective reduction of H2O2 into powerful (OH)-O-center dot. Moreover, organic pollutants as electron donors could interact with surface Cu to accelerate Cu2+/Cu+ cycle and affect O-O bond of H2O2 on La-Cu-Al surface, further promoting the reduction of H2O2 into (OH)-O-center dot. These processes resulted in the high H2O2 utilization and the highly efficient removal of pollutants on La-Cu-Al.
Department中国科学院饮用水科学与技术重点实验室 ; 中国科学院饮用水科学与技术重点实验室
KeywordFENTON-LIKE DEGRADATION ORGANIC POLLUTANTS LAFEO3 PEROVSKITE BISPHENOL-A CATALYST OXIDATION STABILITY ALUMINA OXYGEN
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/47845
Collection中国科学院饮用水科学与技术重点实验室
Corresponding AuthorZhang, Lili
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China
2.Guangzhou Univ, Minist Educ, Inst Environm Res Greater Bay, Key Lab Water Qual & Conservat Pearl River Delta, Guangzhou 510006, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Xiao,Zhang, Lili,Hu, Chun,et al. Enhanced (OH)-O-center dot generation and pollutants removal by framework Cu doped LaAlO3/Al2O3[J]. JOURNAL OF HAZARDOUS MATERIALS,2022,431(0):128578.
APA Zhang, Xiao,Zhang, Lili,Hu, Chun,&Yang, Min.(2022).Enhanced (OH)-O-center dot generation and pollutants removal by framework Cu doped LaAlO3/Al2O3.JOURNAL OF HAZARDOUS MATERIALS,431(0),128578.
MLA Zhang, Xiao,et al."Enhanced (OH)-O-center dot generation and pollutants removal by framework Cu doped LaAlO3/Al2O3".JOURNAL OF HAZARDOUS MATERIALS 431.0(2022):128578.
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